XML to Hash translator
Wrapper library for most popular notification libraries
Desktop notification command on cross platform
Ruby interface to the notmuch mail search and index library
NTLM authentication client for Ruby
parse numbers in natural language from strings (ex forty two)
Miscellaneous functions and classes to help Ruby programming
Ruby class library to handle units of physical quantities
Ruby library for OAuth core
ruby wrapper for the OAuth 2.0 protocol
ruby binding to the object exchange file transfer library
Ruby toolkit for working with the GitHub API
ODBC Binding for Ruby
Lexer generator in the same family as Rexical and Rex
oEmbed for Ruby
Ruby library for accessing low-level information on ogg files
native mixin to speed up ChunkyPNG
fast JSON parser and serializer for Ruby
Oj introspect parser.
Ruby library for read/write access for OLE compound documents
flexible authentication system utilizing Rack middleware
Omniauth strategy for AliCloud
Atlassian OAuth2 strategy for OmniAuth 1.x
Authentiq strategy for OmniAuth
OAuth 2 authentication with the Azure ActiveDirectory V2 API
Omniauth strategy for DingTalk
Oauth2 facebook strategy for OmniAuth
GitHub strategy for the Ruby OmniAuth library
OAuth2 strategy for authenticating to GitLab service
Google OAuth2 strategy for OmniAuth 1.x
abstract OAuth2 strategy for OmniAuth
generic OmniAuth strategy for OAuth2 providers
Wordpress strategy for OmniAuth
library for managing child processes in Ruby
OpenGraph protocol parser
Ruby library for verifying and serving OpenID identities
OpenID Connect Server & Client Library
helpers for signing and verifying signatures with openssl
OpenStack Ruby API
openuri patch to allow redirections between HTTP and HTTPS
Commandline parser for Ruby that just gets out of your way
Emacs org-mode parser for Ruby
Simple DSL for MongoDB query generation
single point of entry for using basic features of ruby ORMs
Simple and easy way to know if you're on windows or not (reliably)
Off The Rails: Use ActiveRecord with Grape, Sinatra, Rack, or anything else!
fast XML parser and object serializer
extensive packing and unpacking capabilities for Ruby
mid-level packet manipulation library for Ruby
terminal paint library with 256 color and effect support